Across
1
Longest side of a right triangle
3
Sum divided by count
6
Part of a line with two endpoints
7
Symbol representing unknown value
9
Total distance around a shape
11
Divisible by two
12
Part of a whole number
Down
2
Repeated addition
3
Space between two intersecting lines
4
Middle value in an ordered dataset
5
Closed shape with straight sides
8
Proven mathematical statement
10
Collection of distinct elements
13
Difference between highest and lowest values
14
Result of multiplication